Posted By
MMS
on 2016-02-14
03:13:34
 |  Re: Ultimate Map V1.8
Just to prevent double POST 
I noticed one part, where the Ulitame map could be upgraded and can be the ultimate map, not only for programmers, but for hW guys too
Connector layout, and with all respect, all your previous routine to mentione the C64 equivalent, could be even more important.
Here is what I just made for the User port:
USER PORT PIN LAYOUT
Pin # C64 Plus/4
1 GND GROUND GND GROUND
2 +5V +5 VDC (100 mA max) +5V +5 VDC
3 /RESET Reset, will force a cold start. RESET Reset
4 CNT1 Counter 1, from CIA #1 PB2 Data 2
5 SP1 Serial Port 1, from CIA #1 PB3 Data 3
6 CNT2 Counter 2, from CIA #2 PB4 Data 4
7 SP2 Serial Port 2, from CIA #2 PB5 Data 5
8 /PC2 Handshaking line, from CIA #2 RxC Receive Clock
9 ATN Serial attention in ATN Serial attention in
10 +9V AC +9 VAC (+ phase) (100 mA ) +9V AC +9 VAC
11 +9V AC +9 VAC (- phase) (100 mA) +9 VAC +9 VAC
12 GND GROUND GND GROUND
A GND GROUND GND GROUND
B /FLAG2 FLAG2 PB0 Data 0
C PB0 Data 0 RxD Receive Data
D PB1 Data 1 RTS Request To Send
E PB2 Data 2 DTR Data Terminal Ready
F PB3 Data 3 PB7 Data 7
H PB4 Data 4 DCD Data Carrier Detect
J PB5 Data 5 PB6 Data 6
K PB6 Data 6 PB1 Data 1
L PB7 Data 7 DSR Data Set Ready
M PA2 PA2 TxD Transmit data
N GND GROUND GND GROUND
As you can see, most of the C64 pins are available, but in different layout, and in case of Plus/4 Pins reflecting to RS232 standard pins, just the TTL voltage need to be converted to RS232 level by MAx232 IC..
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